CN111975239A - Roller frame, girth welding supporting device and welding process - Google Patents
Roller frame, girth welding supporting device and welding process Download PDFInfo
- Publication number
- CN111975239A CN111975239A CN202010953166.0A CN202010953166A CN111975239A CN 111975239 A CN111975239 A CN 111975239A CN 202010953166 A CN202010953166 A CN 202010953166A CN 111975239 A CN111975239 A CN 111975239A
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- Prior art keywords
- roller
- welding
- steel pipe
- groove
- gyro wheel
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
- B23K31/027—Making tubes with soldering or welding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/0426—Fixtures for other work
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/053—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
- B23K2101/06—Tubes
Abstract
The invention relates to the field of welding, in particular to a roller frame, a girth welding supporting device and a welding process. The gyro wheel frame includes support and two at least gyro wheels, the gyro wheel all rotationally connect in on the support, at least two the axis interval of gyro wheel sets up, all be equipped with the annular along circumference on the gyro wheel. The girth welding supporting device comprises a walking trolley and at least two roller carriers, wherein one roller carrier is arranged on the walking trolley. The roller carrier and the girth welding supporting device provided by the invention have the advantages that the positioning effect on the pipeline is realized through the ring groove, and the problem of welding quality caused by axial movement of the pipeline can be avoided.
Description
Technical Field
The invention relates to the field of welding, in particular to a roller frame, a girth welding supporting device and a welding process.
Background
The roller on the roller frame is usually formed by covering a rubber coating layer on the surface of a steel core. Traditional gyro wheel frame is in the in-process of seam welding steel pipe, and general gyro wheel rotates through the gyro wheel with steel pipe outer wall contact, drive steel pipe rotation. In the rotating process, the steel pipe is easy to axially float, and the axial float easily causes the problem of welding quality, so that the problem needs to be avoided.
Particularly, when the elbow is welded, because a certain included angle is formed between the upstream pipe orifice and the downstream pipe orifice of the elbow, the axial movement is more difficult to prevent.
Disclosure of Invention
The invention aims to: aiming at the problem that in the process of roll welding of steel pipes in the prior art, the steel pipes need to be prevented from moving axially, a roller frame, a girth welding supporting device and a welding process are provided.
In order to achieve the purpose, the invention adopts the technical scheme that:
the utility model provides a roller frame, includes support and two at least gyro wheels, the gyro wheel all rotationally connect in on the support, at least two the axis interval of gyro wheel sets up, all be equipped with the annular along circumference on the gyro wheel. Because the axes of the two rollers are arranged at intervals, a space for placing the steel pipe can be formed between the highest points of the two rollers on the rollers, and when the rollers rotate, the steel pipe is driven to rotate together through the static friction force between the rollers and the steel pipe. The invention is characterized in that a stiffening ring is usually arranged on the outer surface of a steel pipe in water conservancy and hydropower engineering. If the width of the stiffening ring is larger than the groove depth of the groove, namely, the dimension of the stiffening ring in the radial direction of the steel pipe is larger than the groove depth of the groove, the outer circular surface of the stiffening ring is contacted with the outer circular surface of the bottom of the groove, and the stiffening ring is supported through the groove bottom of the groove; if the width of the stiffening ring is smaller than the groove depth of the groove, namely, the size of the stiffening ring in the radial direction of the steel pipe is smaller than the groove depth of the groove, the outer circular surface of the steel pipe and the outer circular surface structures of the rollers on two sides of the groove support the steel pipe through the outer circular surface of the rollers.
The annular groove is used for cooperating with the stiffening ring of steel pipe surface, realizes the axial limiting displacement to the stiffening ring through the lateral wall of annular groove, prevents that the steel pipe from producing axial float in welding process. Preferably, the groove width of the annular groove of the roller is slightly larger than the thickness of the stiffening ring of the steel pipe, namely: the groove width of the annular groove of the roller is slightly larger than the thickness of the stiffening ring of the steel pipe in the axial direction of the steel pipe; when putting the stiffening ring into the annular groove, a gap is formed between the stiffening ring and the annular groove, so that the axial limiting effect on the steel pipe can be achieved, and the stiffening ring can be conveniently put into the groove.
As an optional scheme of the present invention, the roller includes a steel core and an encapsulating layer, the steel core is provided with the ring groove, and the encapsulating layer circumferentially covers the surface of the steel core. Through above-mentioned scheme, the steel core is used for guaranteeing the intensity of gyro wheel, ensures that the gyro wheel is enough to support the steel pipe. The rubber coating layer is used for increasing the friction force between the steel core and the roller, and simultaneously can play a damping role at the contact position of the steel core and the roller, so that the noise and the vibration in the working process are reduced. In addition, for the steel pipe of which the outer surface is not provided with the stiffening ribs, and the effect of preventing axial movement to a certain extent can be realized through the friction force between the rubber coating layer and the surface of the steel pipe.
As an optional scheme of the present invention, the surface of the steel core is further provided with an annular mounting groove, and the mounting groove and the annular groove are arranged at an interval in the axial direction of the roller; the rubber coating layer is fixedly connected in the mounting groove, and the outer diameter of the rubber coating layer is larger than the maximum outer diameter of the steel core. Through the structure, the rubber coating layer is arranged in the mounting groove, and if the pressure borne by the rubber coating layer is within a rated range, the surface of the steel pipe only contacts with the rubber coating layer, and then the rubber coating layer is used as a supporting point between the roller and the steel pipe; if the pressure that the rubber coating layer receives is greater than its rated load for the rubber coating layer deflection is great, then the steel core can act on the strong point between gyro wheel and the steel pipe at the bead that forms between mounting groove and the annular, thereby has ensured that the gyro wheel can provide rigid support to the steel pipe, avoids the rubber coating layer to produce too big deformation when the steel pipe is overweight and leads to the rubber coating layer to damage.
As an optional scheme of the present invention, the number of the mounting grooves is two, the two mounting grooves are arranged along the axial direction of the roller and are respectively arranged on two sides of the ring groove, and the two mounting grooves are both provided with the encapsulating layer therein. Set up two mounting grooves and rubber coating layer, the steady symmetry of holding power avoids causing obvious unbalance loading to the gyro wheel.
As an alternative of the present invention, the encapsulating layer is an annular rubber member.
As an alternative of the invention, the roller frame further comprises a drive device, at least one roller is connected with the drive device, and the drive device comprises a hydraulic motor or an electric motor reducer. The driving device drives the roller carrier to rotate, so that the roller carrier drives the part to be welded to move.
As an optional scheme of the present invention, the roller frame includes a first roller body and a second roller body, both of which are annular structures, the first roller body and the second roller body are coaxially disposed and fixedly connected along an axial direction, and the first roller body and the second roller body form the ring groove therebetween. Through the structure, the roller can be formed by splicing two wheels, and the annular groove is formed between the two wheels.
As an alternative solution of the present invention, the roller may also be manufactured as an integral structure, or the steel core of the roller may be manufactured as an integral structure, that is: the annular groove is formed by slotting the one-piece structure.
In a second aspect, the invention further provides a girth welding supporting device, which comprises a walking trolley and at least two roller frames, wherein one roller frame is arranged on the walking trolley. When the circular seam welding is carried out on the bent pipe, the anti-channeling difficulty is higher due to the fact that a certain included angle exists between the upstream pipe orifice and the downstream pipe orifice of the bent pipe. Through the structure, when in welding, one of the roller frames is fixed and matched with one of the elbow sections to be welded, and the other roller frame is matched with the other elbow section to be welded and can slide under the driving of the trolley, so that the anti-moving effect is achieved, and the trolley can be driven by the roller frame to move back and forth along with the rotation of the elbow, thereby meeting the requirement of elbow girth welding.
As an optional scheme of the invention, the girth welding support device comprises at least two walking trolleys, and the roller frames are fixedly connected with the walking trolleys in a one-to-one correspondence manner. Through above-mentioned structure, set up two walking dollies, can to fix arbitrary one of them walking dolly during the use.
As an optional scheme of the invention, the girth welding support device further comprises a rail locking device, the rail locking device is detachably connected with the slide rail, and the walking trolleys are connected with the slide rail in a sliding manner in a lockable manner through the rail locking device. Through the structure, the walking trolley slides along the slide rail, so that the sliding direction of the walking trolley is limited.
A welding process of a girth welding support device comprises the following steps:
s1: assembling and welding stiffening ribs on the steel pipes;
s2: lifting the steel pipe by using a roller carrier, and placing the stiffening ribs in the ring grooves;
s3: the driving device drives the roller to rotate, and the roller drives the steel pipe to rotate;
s4: and (3) welding a circular seam inside or outside the steel pipe according to the groove design, wherein when the steel pipe is a bent pipe, the circular grooves on the two rollers of each roller frame are positioned with the stiffening ribs, no connection exists between the roller frames during welding, the walking trolley at the lower part of the roller frames can rotate freely, and the distance between the roller frames changes along with the change of the distance between the stiffening ribs.
The welding process provided by the invention can effectively realize the function of the girth welding supporting device, and is simple and convenient to operate.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. according to the invention, by arranging the annular groove structure, the annular groove is used for being matched with the stiffening ring on the outer surface of the steel pipe in the process of welding the steel pipe, and the clamping effect on the stiffening ring is realized through the side wall of the annular groove, so that the axial limiting effect on the steel pipe is realized, and the steel pipe is prevented from generating axial movement in the welding process.
2. The steel core is used for guaranteeing the intensity of gyro wheel, ensures that the gyro wheel is enough to support the steel pipe. The rubber coating layer is used for increasing the friction force between the steel core and the roller, and simultaneously can play a damping role at the contact position of the steel core and the roller, so that the noise and the vibration in the working process are reduced. In addition, for the steel pipe of which the outer surface is not provided with the stiffening ribs, the effect of preventing axial movement to a certain extent can be realized through the friction force between the rubber coating layer and the surface of the steel pipe.
3. The rubber coating layer is arranged in the mounting groove, and if the pressure borne by the rubber coating layer is within a rated range, the surface of the steel pipe only contacts with the rubber coating layer, and then the rubber coating layer is used as a supporting point between the roller and the steel pipe; if the pressure that the rubber coating layer receives is greater than its rated load for the rubber coating layer deflection is great, then the steel core can act on the strong point between gyro wheel and the steel pipe at the bead that forms between mounting groove and the annular, thereby has ensured that the gyro wheel can provide rigid support to the steel pipe, avoids the rubber coating layer to produce too big deformation when the steel pipe is overweight and leads to the rubber coating layer to damage.
4. When the circular seam welding supporting device provided by the invention is used for welding a bent pipe, one roller carrier is fixed and matched with one bent pipe section to be welded, and the other roller carrier is matched with the other bent pipe section to be welded and can slide under the driving of the walking trolley, so that the running trolley can drive the roller carrier to move back and forth along with the rotation of the bent pipe while playing a role in preventing shifting, and the circular seam welding supporting device can meet the requirement of circular seam welding of the bent pipe.
5. The welding process provided by the invention can effectively realize the function of the girth welding supporting device, and is simple and convenient to operate.
Drawings
Fig. 1 is a schematic structural diagram of a circular seam welding apparatus according to an embodiment of the present invention when welding a bent pipe.
Fig. 2 is a partially enlarged view of a portion a in fig. 1.
Fig. 3 is a schematic view of a roller frame according to an embodiment of the present invention when attached to a traveling carriage.
Fig. 4 is a sectional view of a roller in an embodiment of the present invention.
Fig. 5 is a schematic structural view of a steel core of a roller in an embodiment of the present invention.
FIG. 6 is a schematic view of a roller according to an embodiment of the present invention, wherein the groove depth of the ring groove is smaller than the radial dimension of the stiffener when the roller is engaged with the stiffener.
FIG. 7 is a schematic view of a roller according to an embodiment of the present invention engaged with a stiffener, wherein the groove depth of the ring groove is greater than the radial dimension of the stiffener.
Fig. 8 is a schematic view of another roller structure according to an embodiment of the present invention.
Icon: 1-a slide rail; 2-a roller frame; 21-a roller; 211-ring groove; 212-a mounting groove; 213-encapsulating layer; 214-a bead; 215-a steel core; 217-a first wheel body; 218-a second wheel body; 22-a scaffold; 3-a walking trolley; 4-bending the pipe; 5-locking the rail device; 6-stiffening ribs.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
Referring to fig. 1 to 8, an embodiment of the present invention provides a roller frame 2, which includes a driving device, a bracket 22, and two rollers 21, wherein the two rollers 21 are rotatably connected to the bracket 22, and axes of the two rollers 21 are spaced apart, so that when the bracket 22 is placed on the ground, highest points on the two rollers 21 are spaced apart, thereby forming a space for placing a steel pipe between the highest points of the two rollers 21. At least one roller 21 is driven by a driving device, in other words, one of the rollers 21 can be driven by one driving device, so that the roller 21 is a driving wheel, and the rest rollers 21 are driven wheels; or may be connected to each of the rollers 21 in a one-to-one correspondence by at least two driving means.
The drive means may alternatively be a hydraulic motor or an electric motor with a reduction gear.
Referring to fig. 6 or 7, the roller 21 is circumferentially provided with a ring groove 211, and when the roller frame 2 is used for a pipeline with a stiffening rib 6, the width of the ring groove 211 is slightly larger than the thickness of the stiffening rib 6 on the outer surface of the pipeline, so that the stiffening rib 6 can be conveniently placed in the ring groove 211, and a limiting force can be applied to the stiffening rib 6 through the side wall of the ring groove 211 to prevent the steel pipe from axially moving.
Further, the roller 21 includes a steel core 215 and an encapsulating layer 213. The ring grooves 211 are provided on the steel core 215. The reinforcing steel bar is further provided with two mounting grooves 212, the mounting grooves 212 are of annular structures and are arranged in parallel with the ring grooves 211 at intervals in the axial direction of the roller 21, and convex ribs 214 are formed between the mounting grooves 212 and the ring grooves 211. The encapsulating layer 213 is fixedly installed in the installation groove 212, and the outer diameter of the encapsulating layer 213 is greater than the maximum outer diameter of the steel core 215, so that the encapsulating layer 213 protrudes out of the outer surface of the steel core 215.
In this embodiment, the encapsulating layer 213 is an annular rubber member. The steel core 215 is a one-piece structure.
In other embodiments of the present invention, the roller may be configured as follows: referring to fig. 8, the roller 21 includes a first roller body 217 and a second roller body 218, the first roller body 217 and the second roller body 218 are both configured to be circular ring structures, and the first roller body 217 and the second roller body 218 are disposed at intervals along the axial direction and are fixedly connected, so that the ring groove 211 is formed between the first roller body 217 and the second roller body 218. Similarly, the first wheel body 217 and the second wheel body 218 may still be provided with the encapsulating layer 213 on the outer surface thereof.
The roller frame 2 provided by the embodiment of the invention has the working principle and the beneficial effects that:
when in use, the steel pipe is placed on the roller carrier 2, and the roller carrier 2 is fixed on the ground. The steel pipe is supported by rollers 21. In the case of a steel pipe having the reinforcing rib 6, the reinforcing rib 6 on the outer surface of the steel pipe is fitted into the ring groove 211. The contact position of the roller 21 with the steel pipe is different depending on the matching relationship between the radial dimension of the reinforcing rib 6 and the depth of the ring groove 211. Referring to fig. 6, when the radial dimension of the stiffening rib 6 is larger than the groove depth of the ring groove 211, the groove bottom of the ring groove 211 contacts the outer circumferential surface of the stiffening rib 6 to support the steel pipe; referring to fig. 7, when the radial dimension of the stiffener 6 is smaller than the groove depth of the ring groove 211, the steel pipe is supported by the contact between the outer surface of the steel pipe and the encapsulating layer 213. The driving roller 21 rotates, the roller 21 drives the steel pipe to rotate through static friction force, and in the rotating process of the steel pipe, the side wall of the annular groove 211 acts on the stiffening rib 6 with a limiting force, so that the steel pipe is prevented from axially moving.
The steel core 215 is used to secure the strength of the roller 21 and ensure that the roller 21 sufficiently supports the steel pipe. The rubber coating layer 213 is used to increase the friction force between the steel core 215 and the roller 21, and simultaneously, the rubber coating layer can play a role in damping the contact position of the steel core 215 and the roller 21, thereby reducing noise and vibration during operation. In addition, for the steel pipe without the stiffening ribs 6 on the outer surface, a certain function of preventing axial play can be realized by the friction force between the rubber coating layer 213 and the surface of the steel pipe.
The encapsulating layer 213 is disposed in the mounting groove 212, referring to fig. 7, when the steel pipe is supported by the contact between the outer circumferential surface of the steel pipe and the encapsulating layer 213, that is: when the size of the stiffening ring 6 in the radial direction is smaller than the groove depth of the ring groove 211, if the pressure borne by the encapsulating layer 213 is within the rated range, the surface of the steel pipe is only contacted with the encapsulating layer 213, and then the encapsulating layer 213 is used as a supporting point between the roller 21 and the steel pipe; if the pressure applied on the rubber coating layer 213 is greater than the rated load, so that the deformation of the rubber coating layer 213 is greater, the rib 214 formed by the steel core 215 between the mounting groove 212 and the ring groove 211 can be used as a supporting point between the roller 21 and the steel pipe, thereby ensuring that the roller 21 can provide rigid support for the steel pipe and avoiding the rubber coating layer 213 from being damaged when the steel pipe is too heavy.
Example 2
Referring to fig. 1 to 8, a girth welding support device according to an embodiment of the present invention includes a traveling carriage 3, a sliding rail 1, a rail locker 5, and a roller frame 2 provided in embodiment 1. Specifically, in this embodiment, the number of the traveling trolley 3 and the number of the roller frames 2 are two, and each traveling trolley 3 is fixedly connected with one roller frame 2.
The two walking trolleys 3 are arranged on the sliding rail 1 at intervals and are connected with the sliding rail 1 in a lockable sliding mode. So-called "lockable sliding connection" means: when the walking trolley 3 needs to be moved, the walking trolley 3 can slide relative to the slide rail 1; however, the running carriage 3 may be fixed to the slide rail 1 when the running carriage 3 does not need to be moved. Specifically, in the present embodiment, the rail locking device 5 is detachably connected to the slide rail 1. When the rail locking device 5 is separated from the sliding rail 1, the walking trolley 3 can slide on the sliding rail 1. When the walking trolley 3 does not need to be moved, the walking trolley 3 and the slide rail 1 can be relatively fixed through the rail locking device 5.
The working principle and the beneficial effects of the girth welding device provided by the embodiment of the invention are as follows:
one of the roller frames 2 is fixed and matched with one of the pipeline sections to be welded, and the other roller frame is matched with the other pipeline section to be welded, so that the axial movement prevention effect of the rollers 21 is beneficial to improving the welding quality.
Particularly, when the device is used for welding the bent pipes 4, one of the roller frames 2 is fixed and matched with one of the sections of the bent pipes 4 to be welded, and the other roller frame 2 is matched with the other section of the bent pipe 4 to be welded and can slide under the driving of the walking trolley 3, so that the device plays a role in preventing movement, and simultaneously, the roller frame 2 can also drive the walking trolley 3 to move back and forth along with the rotation of the bent pipe 4, thereby meeting the requirement of circular seam welding of the bent pipe 4.
Example 3
Referring to fig. 1 to 8, an embodiment of the present invention provides a welding process for a circular seam welding support device, including the following steps:
s1: assembling and welding stiffening ribs 6 on the steel pipes;
specifically, the steel pipe comprises a straight pipe, a taper pipe and a bent pipe 4;
s2: lifting the steel pipe by using the roller frame 2, and placing the stiffening ribs 6 in the ring grooves 211;
specifically, the roller carrier 2 comprises at least two sets, and the roller carrier 2 can be provided with a walking trolley 3;
s3: the driving device drives the roller 21 to rotate, and the roller 21 drives the steel pipe to rotate;
s4: welding a circular seam inside or outside the steel pipe according to the groove design;
specifically, when a straight pipe or a conical pipe is welded, one or two stiffening ribs 6 can be placed in the annular groove 211, and when one stiffening rib 6 is limited in the annular groove 211, the lower part of the roller frame 2 needs to be rigidly connected;
when the elbow 4 is welded, the ring grooves 211 on the two rollers 21 of each roller frame 2 must be positioned with the stiffening ribs 6, when the elbow is welded, the roller frames 2 are not connected, the walking trolley 3 at the lower part of the roller frame 2 can rotate freely, and the distance between the roller frames 2 changes along with the change of the distance between the stiffening ribs 6.
The welding process of the girth welding supporting device provided by the embodiment of the invention has the beneficial effects that:
the welding process provided by the invention can effectively realize the function of the girth welding supporting device, and is simple and convenient to operate.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (11)
1. The utility model provides a gyro wheel frame (2), its characterized in that includes support (22) and two at least gyro wheels (21), gyro wheel (21) all rotationally connect in on support (22), at least two the axis interval of gyro wheel (21) sets up, all be equipped with annular (211) along circumference on gyro wheel (21).
2. The roller frame (2) according to claim 1, wherein said roller (21) comprises a steel core (215) and an encapsulating layer (213), said steel core (215) is provided with said ring grooves (211), and said encapsulating layer (213) circumferentially covers the surface of said steel core (215).
3. The roller frame (2) according to claim 2, wherein said steel core (215) surface is further provided with an annular mounting groove (212), said mounting groove (212) and said ring groove (211) are arranged at a distance in the axial direction of said roller (21); the rubber coating layer (213) is fixedly connected in the mounting groove (212), and the outer diameter of the rubber coating layer (213) is larger than the maximum outer diameter of the steel core (215).
4. The roller frame (2) according to claim 3, wherein the number of the mounting grooves (212) is two, two mounting grooves (212) are arranged along the axial direction of the roller (21) and are respectively arranged at two sides of the ring groove (211), and the two mounting grooves (212) are respectively provided with the encapsulating layer (213).
5. A roller frame (2) according to any of claims 2-4, characterized in that the encapsulating layer (213) is an annular rubber member.
6. A roller frame (2) according to any of claims 1-4, further comprising drive means, to which at least one of said rollers (21) is connected, said drive means comprising a hydraulic motor or an electric motor reducer.
7. A roller carrier (2) according to any one of claims 1-4, wherein the roller (21) comprises a first roller body (217) and a second roller body (218), the first roller body (217) and the second roller body (218) are each of a circular ring structure, the first roller body (217) and the second roller body (218) are coaxially arranged and fixedly connected in the axial direction, and the annular groove (211) is formed between the first roller body (217) and the second roller body (218).
8. Support device for girth welding, characterized in that it comprises a travelling trolley (3) and at least two roller frames (2) according to any one of claims 1 to 7, one of said roller frames (2) being fixedly mounted on said travelling trolley (3).
9. The girth welding support device according to claim 8, characterized by comprising at least two travelling carriages (3), wherein the roller frames (2) are fixedly connected with the travelling carriages (3) in a one-to-one correspondence.
10. The girth welding support device according to claim 9, further comprising a rail locker (5), wherein the rail locker (5) is detachably connected with the slide rail (1), and the traveling trolleys (3) are slidably connected with the slide rail (1) in a lockable manner through the rail locker (5).
11. A welding process of a girth welding support device is characterized by comprising the following steps:
s1: assembling and welding stiffening ribs (6) on the steel pipes;
s2: lifting the steel pipe by using the roller frame (2), and placing the stiffening rib (6) in the ring groove (211);
s3: the driving device drives the roller (21) to rotate, and the roller (21) drives the steel pipe to rotate;
s4: and (2) welding a circular seam inside or outside the steel pipe according to the groove design, wherein when the steel pipe is a bent pipe (4), ring grooves (211) on two rollers (21) of each roller frame (2) are required to be positioned with stiffening ribs (6), the roller frames (2) are not connected during welding, a walking trolley (3) at the lower parts of the roller frames (2) can freely rotate, and the distance between the roller frames (2) is changed along with the change of the distance between the stiffening ribs (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010953166.0A CN111975239A (en) | 2020-09-11 | 2020-09-11 | Roller frame, girth welding supporting device and welding process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010953166.0A CN111975239A (en) | 2020-09-11 | 2020-09-11 | Roller frame, girth welding supporting device and welding process |
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| CN111975239A true CN111975239A (en) | 2020-11-24 |
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| CN202010953166.0A Pending CN111975239A (en) | 2020-09-11 | 2020-09-11 | Roller frame, girth welding supporting device and welding process |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113001092A (en) * | 2021-02-02 | 2021-06-22 | 中国水电四局（兰州）机械装备有限公司 | Six-equal-division steel pipe stiffening ring assembling equipment |
| CN113814646A (en) * | 2021-09-10 | 2021-12-21 | 中国水利水电第八工程局有限公司 | Steel pipe stiffening ring assembling device and assembling method thereof |
-
2020
- 2020-09-11 CN CN202010953166.0A patent/CN111975239A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113001092A (en) * | 2021-02-02 | 2021-06-22 | 中国水电四局（兰州）机械装备有限公司 | Six-equal-division steel pipe stiffening ring assembling equipment |
| CN113001092B (en) * | 2021-02-02 | 2023-01-06 | 中国水电四局（兰州）机械装备有限公司 | Six-equal-division steel pipe stiffening ring assembling equipment |
| CN113814646A (en) * | 2021-09-10 | 2021-12-21 | 中国水利水电第八工程局有限公司 | Steel pipe stiffening ring assembling device and assembling method thereof |
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